Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
ED950/14

ED950/14

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 5MM

0

OSTOP240000

OSTOP240000

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS VERT 5MM

3053

EDSTLZ1555/16

EDSTLZ1555/16

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS VERT 3.81MM

103

EDZ1550/3

EDZ1550/3

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 3.81MM

121

EDSTLZ950/6

EDSTLZ950/6

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 5.08MM

566

EDSTLZ960/12

EDSTLZ960/12

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS 7.62MM

0

OSTTJ1211530

OSTTJ1211530

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS STR 3.5MM

192

OSTOQ127151

OSTOQ127151

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS 90DEG 5MM

53

ED1100/10

ED1100/10

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS 90DEG 5MM

0

EDZ1200/9

EDZ1200/9

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS STR 5.08MM

0

EDSTL951/3

EDSTL951/3

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS 90DEG 5MM

0

OSTOQ187151

OSTOQ187151

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS 90DEG 5MM

0

OSTOQ067151

OSTOQ067151

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 5MM

0

OSTOQ143250

OSTOQ143250

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS VERT 3.81MM

0

OSTTS06315B

OSTTS06315B

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 3.81MM

0

OSTOQ047050

OSTOQ047050

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5MM

0

EDSTLZ1550/12

EDSTLZ1550/12

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS 3.81MM

79

EDZ1200/4

EDZ1200/4

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS STR 5.08MM

0

OSTOQ041251

OSTOQ041251

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 3.5MM

0

OSTTH040160

OSTTH040160

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 90DEG 5MM

10681

Terminal Blocks - Headers, Plugs and Sockets

1. Overview

Terminal blocks, headers, plugs, and sockets are essential components in electrical and electronic systems for establishing reliable connections between circuits. These devices enable signal transmission, power distribution, and system modularity. Their standardized designs ensure interoperability, scalability, and ease of maintenance in complex systems.

2. Main Types and Functional Classification

Type Functional Characteristics Application Examples
Terminal Blocks Screw/clamp-based connections for high current/ voltage Industrial control panels, power distribution units
PCB Headers Pin/grid arrays for board-to-board connections Embedded systems, Arduino shields
RJ Connectors Modular jacks for data/telecom signals Ethernet networks (RJ45), telephone systems (RJ11)
D-Sub Connectors Multi-pin trapezoidal shells for analog/digital signals Legacy serial interfaces, industrial sensors
USB Connectors Hot-pluggable interfaces for power/data Consumer electronics, peripheral devices

3. Structure and Components

Typical structures include:

  • Insulating housing (PA66, PBT, or LCP plastics)
  • Contact elements (phosphor bronze, beryllium copper)
  • Plating materials (gold, tin, nickel for corrosion resistance)
  • Actuation mechanisms (screws, spring clamps, or friction fits)
  • EMI shielding layers (for high-frequency applications)

4. Key Technical Specifications

Parameter Importance
Current Rating (A) Determines power handling capacity
Voltage Rating (V) Defines dielectric strength requirements
Contact Resistance (m ) Impacts signal integrity and power loss
Insertion Loss (dB) Critical for high-speed data transmission
Mating Cycles Indicates mechanical durability
Operating Temperature (- C to + C) Defines environmental tolerance

5. Application Fields

Primary industries include:

  • Industrial automation (PLCs, HMIs)
  • Telecommunications (5G base stations, routers)
  • Consumer electronics (smartphones, wearables)
  • Medical equipment (imaging devices, patient monitors)
  • Automotive (EV charging systems, ADAS)

6. Leading Manufacturers and Products

Manufacturer Representative Product
Phoenix Contact COMBICON series terminal blocks
TE Connectivity MICRO MATCH connectors
Molex SL Series headers
Amphenol D-Subminiature connectors
Samtec QTE high-speed socket systems

7. Selection Guidelines

Key considerations:

  • Electrical requirements (current/voltage levels)
  • Mechanical constraints (space, vibration)
  • Environmental factors (temperature, humidity)
  • Signal integrity needs (frequency, noise rejection)
  • Cost vs. reliability trade-offs
  • Compliance with standards (IPC, IEC, UL)

8. Industry Trends

Emerging developments include:

  • Miniaturization for wearable devices
  • High-speed connectors for 5G/6G ( 25 Gbps)
  • Hybrid connectors integrating power/data
  • Eco-friendly materials (halogen-free, RoHS compliant)
  • Smart connectors with built-in sensors
  • Automotive-grade connectors for EVs

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